The puzzling appearance of an ice cloud on Saturn’s largest moon could possibly be similar to one seen over Earth’s poles
NASA prepares to launch its asteroid sample return mission
OSIRIS-REx will launch for asteroid Bennu in early September
Did we come from a comet?
Did we begin as organisms on a ball of ice and rock?
Where are we most likely to find signs of alien life in the Solar System?
It’s a big question, so we’ve got NASA’s Jennifer Eigenbrode to speculate with us